C131121333133313233213331333133313331333133313331333133313121111112122321   >>    C13112133313331323321333133313331333133313331333133313331312111111212232   <<    C131121333133313233213331333133313331333133313331333133313121111112122323   >>      C131121333133313233213331333133313331333133313331333133313121111112122322   >>