C22213331333133313112331323133313331333133313211211111312323211   >>    C2221333133313331311233132313331333133313331321121111131232321   <<    C22213331333133313112331323133313331333133313211211111312323213   >>      C22213331333133313112331323133313331333133313211211111312323212   >>