| Form. | ||
| Puyuma (Tamalakaw) | a-ydan | when? |
| Puyuma | a-ydan | when? |
| Proto-Rukai | ko-igan-ə | when? |
| WMP | ||
| Pangasinan | kap-igán | when? |
| Kapampangan | kap-ilán | when? |
| Tagalog | ka-ilán | when? |
| Tboli | k-ilón | when? |
| Cebuano | úbus | be all consumed (as something eaten) |
| Molbog | k-idan | when? |
| Tiruray | ked-iron | when? |
| Ida'an Begak | nu k-idan | when? (future) |
| Murut (Timugon) | saŋg-ilan | when? |
| Kelabit | idan | when? |
| Merap | bəhri͂ə̯͂ | when? |
| Karo Batak | nd-igan nai | when? (past) |
| nd-igan | when? (future) | |
| Kayan | iran | when? at what time? |
| h-iran | when? at what time? | |
| OC | ||
| Duke of York | na-ŋa-ian | when? (past) |
| u na-ŋa-ian | when? (future) | |
| Mota | ana-ŋa-isa | when? (past) |
| ŋa-isa | time when | |
| WMP | ||
| Chamorro | ŋa-iʔan | when? |
| OC | ||
| Bali (Uneapa) | ŋizaŋa | when? |
| Lakalai | ga-isa | when? (in the future) |
| Mekeo (East) | aika | when? |
| Lau | a-ŋ-ita | when? (past or future, and not always interrogative) |
| Nggela | ŋ-iha | how many? how much? when? |
| Mota | ŋa-isa | time when |
| Amblong | na-niza | when? |
| Tangoa | ŋ-isa | when? |