C1111121111331311211331333133313331313331323223313112113313231322221311   >>    C111112111133131121133133313331333131333132322331311211331323132222131   <<    C1111121111331311211331333133313331313331323223313112113313231322221313   >>      C1111121111331311211331333133313331313331323223313112113313231322221312   >>