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