C111123313331323113313331333133313331122112312111111331323311321   >>    C11112331333132311331333133313331333112211231211111133132331132   <<    C111123313331323113313331333133313331122112312111111331323311323   >>      C111123313331323113313331333133313331122112312111111331323311322   >>