Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

What does this rebus picture identify?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

What Time Should the last watch show in the below figure?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

The answer I give is yes, but what I mean is no. What was the question?

What does this rebus puzzle means ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?