C111123313331323113313331333133313331122112312111133132233132221   >>    C11112331333132311331333133313331333112211231211113313223313222   <<    C111123313331323113313331333133313331122112312111133132233132223   >>      C111123313331323113313331333133313331122112312111133132233132222   >>