12:01 AM

A time that occurs one minute after 12:00 AM. Represented as 00:01 on a twelve-hour clock.

I went to sleep at 12:01 AM.

α

The lowercase alpha. See also: Α

α is the first letter of the Greek alphabet.

Α

The uppercase alpha. See also: α

Α is the first letter of the Greek alphabet

A

The first letter of the Latin alphabet. The letter is a vowel.

A is a vowel

121

A number/integer between 120 and 122. (See also -121)

I have 121 (random plural noun).

12-1

In scoring, used to represent a team with 12 score and a team with 1 score. (See 12 to 1 or Twelve to one.
An equation, equal to 11.

Our team is losing 12-1.
12-1=11

-121

A negative number/integer between -122 and -120. (See also: 121)

-121 is a integer