C11111211113313112113313331333133313331333132322121111121111331333133312323131   >>    C1111121111331311211331333133313331333133313232212111112111133133313331232313   <<    C11111211113313112113313331333133313331333132322121111121111331333133312323133   >>      C11111211113313112113313331333133313331333132322121111121111331333133312323132   >>