C11112331333132311331333133313331323133313231131211113313223211111   >>    C1111233133313231133133313331333132313331323113121111331322321111   <<    C11112331333132311331333133313331323133313231131211113313223211113   >>      C11112331333132311331333133313331323133313231131211113313223211112   >>