#include <iostream.h>

int convertNum(char temp);
int convertSuit(char temp);

int main()
{
  int deck[52];
  int decknum, isValid, winner, leadsuit;
  int player1num[13];
  int player1suit[13];
  int player2num[13];
  int player2suit[13];
  int player3num[13];
  int player3suit[13];
  int player4num[13];
  int player4suit[13];

  int cardNum[4];

  int i, j;

  char temp[5];

  cin >> temp;

  while(true)
    {
      if(cin.eof())
	break;

      isValid = 1;

      for(i=0; i<52; i++)
	deck[i] = 0;

      for(i=0; i<13; i++)
	{
	  player1num[i] = convertNum(temp[0]);
	  player1suit[i] = convertSuit(temp[1]);
	  decknum = (player1num[i]) + (player1suit[i]*13);
	  if(deck[decknum])
	    {
	      isValid = 0;
	    }
	  else
	    deck[decknum] = 1;
	  cin >> temp;
	}

      for(i=0; i<13; i++)	  
	{
	  player2num[i] = convertNum(temp[0]);
	  player2suit[i] = convertSuit(temp[1]);
	  decknum = (player2num[i]) + (player2suit[i]*13);
	  if(deck[decknum])
	    {
	      isValid = 0;
	    }
	  else
	    deck[decknum] = 1;       
	  cin >> temp;
	}

      for(i=0; i<13; i++)
	{
	  player3num[i] = convertNum(temp[0]);
	  player3suit[i] = convertSuit(temp[1]);
	  decknum = (player3num[i]) + (player3suit[i]*13);
	  if(deck[decknum])
	    {
	      isValid = 0;
	    }
	  else
	    deck[decknum] = 1;
	  
	  cin >> temp;
	}
      
      for(i=0; i<13; i++)
	{
	  player4num[i] = convertNum(temp[0]);
	  player4suit[i] = convertSuit(temp[1]);
	  decknum = (player4num[i]) + (player4suit[i]*13);
	  if(deck[decknum])
	    {
	      isValid = 0;
	    }
	  else
	    deck[decknum] = 1;	  

	  cin >> temp;
	}

      winner = 0;

      if(isValid)
	{
	  for(i=0; i<13; i++)
	    {
	      if(winner==0)
		{
		  leadsuit = 0;
		  if( !((player1num[i] == 0 && player1suit[i] == 0) ||
			(player2num[i] == 0 && player2suit[i] == 0) ||
			(player3num[i] == 0 && player3suit[i] == 0) ||
			(player4num[i] == 0 && player4suit[i] == 0)))
		    {
		      isValid = 0;
		      break;
		    }
		}
	      else
		{
		  if(winner == 1)
		    leadsuit = player1suit[i];
		  if(winner == 2)
		    leadsuit = player2suit[i];
		  if(winner == 3)
		    leadsuit = player3suit[i];
		  if(winner == 4)
		    leadsuit = player4suit[i];
		}

	      if(player1suit[i] == leadsuit)
		cardNum[0] = player1num[i];
	      else
		{
		  for(j=i+1; j<13; j++)
		    {
		      if(player1suit[j] == leadsuit)
			{
			  isValid = 0;
			}
		    }
		  if(isValid == 0)
		    break;
		  cardNum[0] = -1;
		}

	      if(player2suit[i] == leadsuit)
		cardNum[1] = player2num[i];
	      else
		{
		  for(j=i+1; j<13; j++)
		    {
		      if(player2suit[j] == leadsuit)
			{
			  isValid = 0;
			}
		    }
		  if(isValid == 0)
		    break;
		  cardNum[1] = -1;
		}

	      if(player3suit[i] == leadsuit)
		cardNum[2] = player3num[i];
	      else
		{
		  for(j=i+1; j<13; j++)
		    {
		      if(player3suit[j] == leadsuit)
			{
			  isValid = 0;
			}
		    }
		  if(isValid == 0)
		    break;
		  cardNum[2] = -1;
		}

	      if(player4suit[i] == leadsuit)
		cardNum[3] = player4num[i];
	      else
		{
		  for(j=i+1; j<13; j++)
		    {
		      if(player4suit[j] == leadsuit)
			{
			  isValid = 0;
			}
		    }
		  if(isValid == 0)
		    break;
		  cardNum[3] = -1;
		}

	      for(j=0; j<4; j++)
		{
		  if(cardNum[j] > cardNum[winner-1])
		    winner = j+1;
		}
	    }
	}

      if(isValid)
	cout << "Valid" << endl;
      else
	cout << "Invalid" << endl;
    }
  return 1;
}

int convertNum(char temp)
{
  if(temp == 'T')
    return 8;
  if(temp == 'J')
    return 9;
  if(temp == 'Q')
    return 10;
  if(temp == 'K')
    return 11;
  if(temp == 'A')
    return 12;
  return temp - '2';
}

int convertSuit(char temp)
{
  if(temp == 'C')
    return 0;
  if(temp == 'D')
    return 1;
  if(temp == 'H')
    return 2;
  if(temp == 'S')
    return 3;
  return 4;
}