C11112331312111112111133133313331333132322121111331323223323321   >>    C1111233131211111211113313331333133313232212111133132322332332   <<    C11112331312111112111133133313331333132322121111331323223323323   >>      C11112331312111112111133133313331333132322121111331323223323322   >>