C1111121111331311211331333133313331313331323223313231232313231333121   >>    C111112111133131121133133313331333131333132322331323123231323133312   <<    C1111121111331311211331333133313331313331323223313231232313231333123   >>      C1111121111331311211331333133313331313331323223313231232313231333122   >>