1 2 3 4
E H E E
* T X t
  * T X
    * v
      *
handedness 1 2 3 L
handedness 1 2 4 L
handedness 1 3 4 L
handedness 2 3 4 R
sheetS 1 4
sheetD 3 1
length 1 E 5 100
length 2 H 8 100
length 3 E 5 100
length 4 E 5 100