Verb Type 3 (-la/-na/-ra/-sta)

Verb Type 3 is a large group containing essential verbs like olla (to be) and mennä (to go).

1. Stem Formation
To find the stem, remove the final two letters of the infinitive (the consonant + a/ä) and add the linking vowel -e-:

• tulla (to come) → tul- + e → tule-
• mennä (to go) → men- + e → mene-
• opiskella (to study) → opiskel- + e → opiskele-
• nousta (to rise) → nous- + e → nouse-

2. Personal Endings
Once you have the stem ending in -e-, add the personal endings (-n, -t, -mme, -tte, -vat). Remember that vowel harmony affects the 3rd person plural:

• Minä tulen
• Sinä tulet
• Hän tulee (Note: vowel lengthening applies here)
• Me tulemme
• Te tulette
• He tulevat / -vät (e.g., tulevat but menevät)

3. Negative Form and Imperative
To form the negative, use the negative verb (en, et, ei...) followed by the stem ending in -e- without any personal ending: minä en tule, he eivät mene. The singular imperative command is identical to this bare stem (e.g., Tule!). The plural imperative attaches directly to the consonant stem (e.g., tul- + -kaa → Tulkaa!, men- + -kää → Menkää!).

4. Past Tense
In the past tense, the stem vowel -e- drops before the past tense marker -i- (e.g., tule- + i → tuli-, so minä tulin).

5. Past Participle (NUT-participle)
To form the past participle for Verb Type 3, the participle marker assimilates to the final consonant of the infinitive stem. For example: tulla → tullut, mennä → mennyt, nousta → noussut. This form is required to create the negative past tense (e.g., minä en tullut) and the perfect tenses (e.g., minä olen tullut).

6. Passive Present
The passive present form for Type 3 verbs is very easy to form by adding -an / -än directly to the infinitive (e.g., tulla → tullaan, mennä → mennään).

7. Exceptions: juosta and seistä
The verb juosta (to run) is a common exception. Instead of 'juose-', the stem is juokse- (e.g., minä juoksen). The verb seistä (stand) has a limited paradigm alongside seisoa. Personal indicative forms use seisoa, as in minä seison, but its own consonant-stem forms remain: seistään (passive), seissyt (past participle), and seistessä (while standing). Do not mechanically generate seisee from the regular Type 3 rule.

8. The Irregularity of 'olla'
While olla uses the Type 3 stem ole- for most forms (olen, olet, olemme), the 3rd person singular is irregular: hän on (not olee). The 3rd person plural is he ovat.

9. Inverse Gradation
Some Verb Type 3 verbs undergo inverse consonant gradation. If the verb stem contains certain gradating consonants, the infinitive is in the weak grade, but the conjugated forms are in the strong grade. This strong grade applies to ALL persons in both the present and past tense (e.g., present: minä ajattelen, past: minä ajattelin). Note that not all combinations of k, p, or t gradate (for example, the 'st' in keskustella does not change):

• ajatella (one 't') → minä ajattelen (two 't's)
• suudella ('d') → minä suutelen ('t')

10. Spoken Finnish Nuance
In spoken Finnish, high-frequency Type 3 verbs often shorten. For example, tulen becomes tuun and menen becomes meen.

Plural Past Participles
In standard Finnish, plural subjects use tulleet, menneet, nousseet: He eivät menneet (They did not go), Me olemme tulleet (We have come). Change final -ut/-yt to -eet, retaining the preceding consonant.