C1111121111331311211331333133313331333133313221211113313331333132313112123121   >>    C111112111133131121133133313331333133313331322121111331333133313231311212312   <<    C1111121111331311211331333133313331333133313221211113313331333132313112123123   >>      C1111121111331311211331333133313331333133313221211113313331333132313112123122   >>