C22213331333133313112331323133313331333133313112331333131313233213221   >>    C2221333133313331311233132313331333133313331311233133313131323321322   <<    C22213331333133313112331323133313331333133313112331333131313233213223   >>      C22213331333133313112331323133313331333133313112331333131313233213222   >>