C31232233133313221211113313331333133313331212111133112133322121   >>    C3123223313331322121111331333133313331333121211113311213332212   <<    C31232233133313221211113313331333133313331212111133112133322123   >>      C31232233133313221211113313331333133313331212111133112133322122   >>