The past is ascended, so it is a regular verb.
The verb to learn is a regular verb.
Broadcast is a regular verb.
It's a regular verb.
do dictionaries show regular and irregular verb tenses
regular
"Have" is an irregular verb in English.
It's irregular.
regular or irregular
It's an irregular verb.
It's an irregular verb.
Ate is an irregular verb.
It's an irregular verb.
It's an irregular verb.
To swim is an irregular verb.
By is not a verb, so it is neither regular nor irregular.
Shown is an irregular verb because shown is different to ending in -ed. Does shown end in -ed? No it doesn't end in -ed so which makes it an irregular verb.
irregular