C131121333133313233213331333133313331333133313113313331322113221   >>    C13112133313331323321333133313331333133313331311331333132211322   <<    C131121333133313233213331333133313331333133313113313331322113223   >>      C131121333133313233213331333133313331333133313113313331322113222   >>