C11111211113313112113313331333133313331333132313331333133313331323321232323221   >>    C1111121111331311211331333133313331333133313231333133313331333132332123232322   <<    C11111211113313112113313331333133313331333132313331333133313331323321232323223   >>      C11111211113313112113313331333133313331333132313331333133313331323321232323222   >>