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