First line: b v k (#blocks, #points, #points in each block).
Next b lines listing one block each, order of blocks is arbitrary.
The points in each block must be listed in increasing order.
Use only white space to separate items (no , . ; etc).

35 15 3
 1  2  3 
 1  4  5 
 1  6  7 
 1  8  9 
 1 10 11 
 1 12 13 
 1 14 15 
 2  4  6 
 2  5  7 
 2  8 10 
 2  9 11 
 2 12 14 
 2 13 15 
 3  4  7 
 3  5  6 
 3  8 12 
 3  9 13 
 3 10 15 
 3 11 14 
 4  8 15 
 4  9 10 
 4 11 12 
 4 13 14 
 5  8 11 
 5  9 14 
 5 10 13 
 5 12 15 
 6  8 14 
 6  9 15 
 6 10 12 
 6 11 13 
 7  8 13 
 7  9 12 
 7 10 14 
 7 11 15