C11112331312111112111133132313331333133313233313331322112123231   >>    C1111233131211111211113313231333133313331323331333132211212323   <<    C11112331312111112111133132313331333133313233313331322112123233   >>      C11112331312111112111133132313331333133313233313331322112123232   >>