C11112331333132311331333133313331323133313231131211113313232332212322121   >>    C1111233133313231133133313331333132313331323113121111331323233221232212   <<    C11112331333132311331333133313331323133313231131211113313232332212322123   >>      C11112331333132311331333133313331323133313231131211113313232332212322122   >>