C111123313331323113313331333133313331323132311233133313221132311   >>    C11112331333132311331333133313331333132313231123313331322113231   <<    C111123313331323113313331333133313331323132311233133313221132313   >>      C111123313331323113313331333133313331323132311233133313221132312   >>