C22213331333133313112331323133313331333131111121111331333223332211   >>    C2221333133313331311233132313331333133313111112111133133322333221   <<    C22213331333133313112331323133313331333131111121111331333223332213   >>      C22213331333133313112331323133313331333131111121111331333223332212   >>