C31232233133313221211113313331333133313311211111323223313331333131133132213121   >>    C3123223313331322121111331333133313331331121111132322331333133313113313221312   <<    C31232233133313221211113313331333133313311211111323223313331333131133132213123   >>      C31232233133313221211113313331333133313311211111323223313331333131133132213122   >>