that {pa'amsi} series could be further improved e.g. {gaimsi} or {gairmese} to free us from rafsi that are so hard to memorize and allowing to use the non-rafsi form instead.
Note that {gai'amsi} doesnt differ much in the number of syllables from {gai zei masti} if " ai' " isn't pronounced as [ajh] but as [aih]. Although it shouldn't be {masti} there since the latter means something different.
A similar approach can be used for days of week although Monday=1 can make lusophones and Hebrew speakers feel uncomfortable (Monday = segunda-feira).