C111123313331323113313331333133313331122112312111111331323131121   >>    C11112331333132311331333133313331333112211231211111133132313112   <<    C111123313331323113313331333133313331122112312111111331323131123   >>      C111123313331323113313331333133313331122112312111111331323131122   >>