et ⇌ sī / [-spread -labdent]+[e-i-l-o-r-u-y-ē-ī-ō-ū][b-c-g-k-m-p-q]_

http://lila-erc.eu/data/lexicalResources/prinparlat/id/pattern_361 <http://lila-erc.eu/ontologies/prinparlat/Pattern>

et ⇌ sī / [-spread -labdent]+[e-i-l-o-r-u-y-ē-ī-ō-ū][b-c-g-k-m-p-q]_ 
et ⇌ sī / [-spread -labdent]+[e-i-l-o-r-u-y-ē-ī-ō-ū][b-c-g-k-m-p-q]_ 

data from the linked data cloud