C11111211113313112113313331333133313331333132322121111121111331333132232321   >>    C1111121111331311211331333133313331333133313232212111112111133133313223232   <<    C11111211113313112113313331333133313331333132322121111121111331333132232323   >>      C11111211113313112113313331333133313331333132322121111121111331333132232322   >>