C111123313331323113313331333133313331122112312111133132233132322123321   >>    C11112331333132311331333133313331333112211231211113313223313232212332   <<    C111123313331323113313331333133313331122112312111133132233132322123323   >>      C111123313331323113313331333133313331122112312111133132233132322123322   >>