C31232233133313221211113313331333133313331121113232233313233231   >>    C3123223313331322121111331333133313331333112111323223331323323   <<    C31232233133313221211113313331333133313331121113232233313233233   >>      C31232233133313221211113313331333133313331121113232233313233232   >>