C31232233133313221211113313331333132313331333133313231312111211   >>    C3123223313331322121111331333133313231333133313331323131211121   <<    C31232233133313221211113313331333132313331333133313231312111213   >>      C31232233133313221211113313331333132313331333133313231312111212   >>