It is a woman and a <i lang='pi' translate='no'>paṇḍaka</i>, but he perceives both as women, and he has lust.

If the monk encourages both of them to satisfy his own desires, he commits one offense entailing suspension and one offense of wrong conduct. … (To be expanded as in <a href='https://suttacentral.net/pli-tv-bu-vb-ss2#3.3.4'>Bu Ss 2:3.3.4</a>–3.3.61, with appropriate substitutions.) …

Non-offenses