C31232233133313221211113313331333133313331212111111221123131111   >>    C3123223313331322121111331333133313331333121211111122112313111   <<    C31232233133313221211113313331333133313331212111111221123131113   >>      C31232233133313221211113313331333133313331212111111221123131112   >>