CoercDb.coerc_carr -> CoercDb.coerc_carr -> UriManager.uri ->
(CoercDb.coerc_carr * CoercDb.coerc_carr * UriManager.uri * Cic.obj) list
CoercDb.coerc_carr -> CoercDb.coerc_carr -> UriManager.uri ->
(CoercDb.coerc_carr * CoercDb.coerc_carr * UriManager.uri * Cic.obj) list