C11112331333132311331333133313331312111113311211113313223313331323123231   >>    C1111233133313231133133313331333131211111331121111331322331333132312323   <<    C11112331333132311331333133313331312111113311211113313223313331323123233   >>      C11112331333132311331333133313331312111113311211113313223313331323123232   >>