C131121333133313233213331333133313331333133313231323311331333221   >>    C13112133313331323321333133313331333133313331323132331133133322   <<    C131121333133313233213331333133313331333133313231323311331333223   >>      C131121333133313233213331333133313331333133313231323311331333222   >>