C131121333133313233213331333133313331333133313133313331323132211211321   >>    C13112133313331323321333133313331333133313331313331333132313221121132   <<    C131121333133313233213331333133313331333133313133313331323132211211323   >>      C131121333133313233213331333133313331333133313133313331323132211211322   >>