C31232233133313221211113313331333132313331333133313121111331323132313121   >>    C3123223313331322121111331333133313231333133313331312111133132313231312   <<    C31232233133313221211113313331333132313331333133313121111331323132313123   >>      C31232233133313221211113313331333132313331333133313121111331323132313122   >>