C31232233133313221211113313331333133313113311331333133313331333232332313232321   >>    C3123223313331322121111331333133313331311331133133313331333133323233231323232   <<    C31232233133313221211113313331333133313113311331333133313331333232332313232323   >>      C31232233133313221211113313331333133313113311331333133313331333232332313232322   >>