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