L Blocks (grid 3×2 or 4×4 representation):
It sounds like you're asking for a (tetromino) in the context of "eChalk Tetrus" — an educational/browser-based Tetris-style game. echalk tetrus
■ □ □ ■ □ □ ■ ■ □ Or as a minimal map: (0,0), (1,0), (2,0), (2,1) L Blocks (grid 3×2 or 4×4 representation): It