C131121333133313233213331333133313331333133313133313332213232321   >>    C13112133313331323321333133313331333133313331313331333221323232   <<    C131121333133313233213331333133313331333133313133313332213232323   >>      C131121333133313233213331333133313331333133313133313332213232322   >>