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