C11111211113313112113313331333133313331333133213331333133313331311331322311321   >>    C1111121111331311211331333133313331333133313321333133313331333131133132231132   <<    C11111211113313112113313331333133313331333133213331333133313331311331322311323   >>      C11111211113313112113313331333133313331333133213331333133313331311331322311322   >>