C121212123112323223313132322331323133313232213331323331323313221   >>    C12121212311232322331313232233132313331323221333132333132331322   <<    C121212123112323223313132322331323133313232213331323331323313223   >>      C121212123112323223313132322331323133313232213331323331323313222   >>