C111123313331323113313331333133313331323132311233133313112111311   >>    C11112331333132311331333133313331333132313231123313331311211131   <<    C111123313331323113313331333133313331323132311233133313112111313   >>      C111123313331323113313331333133313331323132311233133313112111312   >>