C11112331312111112111133133313331333132322121111331323223331321   >>    C1111233131211111211113313331333133313232212111133132322333132   <<    C11112331312111112111133133313331333132322121111331323223331323   >>      C11112331312111112111133133313331333132322121111331323223331322   >>