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