C111123313331323113313331333133313331122112312111133132233132313233111   >>    C11112331333132311331333133313331333112211231211113313223313231323311   <<    C111123313331323113313331333133313331122112312111133132233132313233113   >>      C111123313331323113313331333133313331122112312111133132233132313233112   >>