exchange code
| field
| exchange code abbr. | |
| commun. | indicativo de central |
| field abbr. | |
| agric. | campo de produção; folha; trabalhando nos campos |
| commun. | quadro |
| comp., MS | campo |
| earth.sc. | campo |
| environ. | campos |
| IT | atributo; zona |
| radio | trama |
| |||
| indicativo de central | |||
|
exchange code : 5 phrases in 2 subjects |
| Communications | 3 |
| Electronics | 2 |