C11111211113313112113313331333133313331333132322121111121111121   >>    C1111121111331311211331333133313331333133313232212111112111112   <<    C11111211113313112113313331333133313331333132322121111121111123   >>      C11111211113313112113313331333133313331333132322121111121111122   >>