C11112331333132311331333133313331333132313121111331323123123231   >>    C1111233133313231133133313331333133313231312111133132312312323   <<    C11112331333132311331333133313331333132313121111331323123123233   >>      C11112331333132311331333133313331333132313121111331323123123232   >>