C31232233133313221211113313331333131211113313231333233112323231   >>    C3123223313331322121111331333133313121111331323133323311232323   <<    C31232233133313221211113313331333131211113313231333233112323233   >>      C31232233133313221211113313331333131211113313231333233112323232   >>