C11111211113313112113313331333133313331333131211113313331323223123231   >>    C1111121111331311211331333133313331333133313121111331333132322312323   <<    C11111211113313112113313331333133313331333131211113313331323223123233   >>      C11111211113313112113313331333133313331333131211113313331323223123232   >>