2 Lines

Doing a 2 line PC increases what PC you are on by 4. So if you did a 2 line PC on your 2nd PC, you are now on your 6th PC (2+4=6).

You can only do a 2 line PC if you have no more than 1 S/Z/T piece in your first 5 pieces and if you have an even amount on J+L pieces.

Here are all the 2 line solutions. (redundant solutions are not shown)