C11112331312111112111133133313331333132322121111331333133321133321   >>    C1111233131211111211113313331333133313232212111133133313332113332   <<    C11112331312111112111133133313331333132322121111331333133321133323   >>      C11112331312111112111133133313331333132322121111331333133321133322   >>