C22213331333133313112331323133313331333131111121111133313221111   >>    C2221333133313331311233132313331333133313111112111113331322111   <<    C22213331333133313112331323133313331333131111121111133313221113   >>      C22213331333133313112331323133313331333131111121111133313221112   >>