This verb follows the standard English past tense rule: simply add -ed to the base form.
Cf is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she cfed to the store."
No. Use "did not cf" (not "did not cfed").
The verb cf follows the standard English past tense conjugation rule. When forming the past tense, cf becomes cfed. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why cf becomes cfed helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using cfed in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she cfed to the store." The past tense form does not change based on the subject — I cfed, you cfed, he/she cfed, we cfed, they cfed.