C1111233133313231133133313331333133313231232313331333132112323221221   >>    C111123313331323113313331333133313331323123231333133313211232322122   <<    C1111233133313231133133313331333133313231232313331333132112323221223   >>      C1111233133313231133133313331333133313231232313331333132112323221222   >>