_ī ⇌ it_rum / X*[+son][-spread -labdent -low]_u_
http://lila-erc.eu/data/lexicalResources/prinparlat/id/pattern_883 <http://lila-erc.eu/ontologies/prinparlat/Pattern>
_ī ⇌ it_rum / X*[+son][-spread -labdent -low]_u_
_ī ⇌ it_rum / X*[+son][-spread -labdent -low]_u_