C313131323331311331322331322331311211331323331322331323133313233232311   >>    C31313132333131133132233132233131121133132333132233132313331323323231   <<    C313131323331311331322331322331311211331323331322331323133313233232313   >>      C313131323331311331322331322331311211331323331322331323133313233232312   >>