4x1 residue solutions
Equivalent to starting with a horizontal I.
JTI, TJI with T in hold
OJLI, JOLI, LOJI (doesn't matter when I comes)
3x1 corner residue solutions
Shown with residue on right, but mirror versions work with L and J swapped.
JL or LJ next, J in hold
Can be placed in any order (LJJ, JLJ, JJL)
TL or LT next, L in hold
3x1 center residue solutions
LTI, TLI (mirror works with J instead of L)
2x1 corner residue solutions
Again, shown with residue on right, swap J and L for mirror.
Note: If you have the option, placing I first saves a line clear delay which means it's superior.
1x2 corner residue solutions
Any 4x2 shape works (OO, JJ, LL, II)
3x1 to 1x2
3x1 to 2x1