C313131323331311331322331322331311211331323331313331323331323221121231   >>    C31313132333131133132233132233131121133132333131333132333132322112123   <<    C313131323331311331322331322331311211331323331313331323331323221121233   >>      C313131323331311331322331322331311211331323331313331323331323221121232   >>