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