C11111211113313112113313331333133313331333131211113313332233113231   >>    C1111121111331311211331333133313331333133313121111331333223311323   <<    C11111211113313112113313331333133313331333131211113313332233113233   >>      C11111211113313112113313331333133313331333131211113313332233113232   >>