C22213331333133313112331323133313331333133313233121133132232221   >>    C2221333133313331311233132313331333133313331323312113313223222   <<    C22213331333133313112331323133313331333133313233121133132232223   >>      C22213331333133313112331323133313331333133313233121133132232222   >>