This is a classic (very old) puzzle . . .
i'd appreciate it very much if someone could help me solve this:
Each row describes the contents of the row above it.
The first row is: .
It contains: .one 1, one 2, one , one .
The second row is: .
The second row contains: .three 1's, one 2, one 1, one , one 1, one .
The third row is: .
The third row contains: .one 3, two 1's, one 2, three 1's, 1 , three 1's, one .
The fourth row is: .