The SFGPL can convert nouns, verbs, and modifiers into each other's parts of speech. The following table lists the words converted to parts-of-speech by the SFGPL.
| Before | After | Word | |
|---|---|---|---|
| V2N | Verb | Noun | fi |
| M2N | Modifier | Noun | fu |
| M2V | Modifier | Verb | si |
| N2V | Noun | Verb | su |
| N2M | Noun | Modifier | li |
| V2M | Verb | Modifier | lu |
Verb to noun and noun to modifier are especially common.
Verb to noun is used as in "This is building.".
ma gu so fi sa 'build'
The verb of the original word can also be pre-conjugated according to verb conjugation.
Noun to modifier is used to create the equivalent meaning of a phrase that combines an English preposition and a noun.
In such cases, li and DeterminerN are used in combination.
"I live in Tokyo." in SFGPL becomes the following.
In this case, pun is a determiner of location.
ta ga na sa 'live' li pun fa 'Tokyo'
It can also be combined with the word son, which abstracts the noun, to mean "-like".
"My daughter has a cat-like stuffed toy." can be expressed in SFGPL as follows.
mi mi ga so san fa 'daughter' so me me fa 'toy' so lu ne sa 'stuff' so li son fa 'cat'
Verb to modifier conversion allows for the use of the participle equivalent, which is common in the Indo-European language family. The verb of the original word can also be pre-conjugated according to verb conjugation.
"There is a sleeping boy." can be expressed in the SFGPL as follows.
ma pun go so me fa 'boy' so lu ni sa 'sleep'
The phrase "I lived in that destroyed building." can be expressed as follows.
di ta ga na sa 'live' li pun ma go so san me fi sa 'build' so lu ne sa 'destroy'
| English | SFGPL |
|---|---|
| this | gu |
| build | sa 'build' |
| I | ga |
| live | sa 'live' |
| in Tokyo | li pun fa 'Tokyo' |
| daughter | fa 'daughter' |
| cat | fa 'cat' |
| stuffed | lu ne sa 'stuff' |
| toy | fa 'toy' |
| there | pun go |
| sleep | sa 'sleep' |
| boy | fa 'boy' |
| that | go |
| destroy | sa 'destroy' |