C11111211113313112113313331333133313331333131211113313331211113313232223312231   >>    C1111121111331311211331333133313331333133313121111331333121111331323222331223   <<    C11111211113313112113313331333133313331333131211113313331211113313232223312233   >>      C11111211113313112113313331333133313331333131211113313331211113313232223312232   >>