C31232233133313221211113313331333131211113313231333133311231311   >>    C3123223313331322121111331333133313121111331323133313331123131   <<    C31232233133313221211113313331333131211113313231333133311231313   >>      C31232233133313221211113313331333131211113313231333133311231312   >>