C31232233133313221211113313331333132313331333133313331333132322123232311   >>    C3123223313331322121111331333133313231333133313331333133313232212323231   <<    C31232233133313221211113313331333132313331333133313331333132322123232313   >>      C31232233133313221211113313331333132313331333133313331333132322123232312   >>