### 22. Conversion of sumti tcita: JAI

The following cmavo are discussed in this section:

```     jai     JAI                 tense conversion
fai     FA                  indefinite place
```

Conversion is the regular Lojban process of moving around the places of a place structure. The cmavo of selma'o SE serve this purpose, exchanging the first place with one of the others:

```22.1)  mi cu klama le zarci
I go-to the market.

22.2)  le zarci cu se klama mi
The market is-gone-to by-me.
```
It is also possible to bring a place that is specified by a sumti tcita (for the purposes of this chapter, a tense sumti tcita) to the front, by using “jai” plus the tense as the grammatical equivalent of SE:
```22.3)  le ratcu cu citka le cirla vi le panka
The rat eats the cheese [short distance] the park.
The rat eats the cheese in the park.

22.4)  le panka cu jai vi citka le cirla fai le ratcu
The park is-the-place-of eating the cheese by-the rat.
The park is where the rat eats the cheese.
```
In Example 22.4, the construction JAI+tense converts the location sumti into the first place. The previous first place has nowhere to go, since the location sumti is not a numbered place; however, it can be inserted back into the bridi with “fai”, the indefinite member of selma'o FA.

(The other members of FA are used to mark the first, second, etc. places of a bridi explicitly:

```22.5)  fa mi cu klama fe le zarci
```
means the same as
```22.6)  fe le zarci cu klama fa mi
```
as well as the simple
```22.7)  mi cu klama le zarci
```
in which the place structure is determined by position.)

Like SE conversion, JAI+tense conversion is especially useful in descriptions with LE selma'o:

```22.8)  mi viska le jai vi citka be le cirla
I saw the place-of eating the cheese.
```
Here the eater of the cheese is elided, so no “fai” appears.

Of course, temporal tenses are also usable with JAI:

```22.9)  mi djuno fi le jai ca morsi be fai la djan.