1. To be
Simple present

2. Is are am
I am
 You are
 He is
 she is
 it is
 We are
 They are

3. contractions
 I’m
 You’re
 He’s
 She’s
 It’s
 We’re
 They’re

4. Negative
 I’m not
 You’re not
 He’s not
 She’s not
 It’s not
 We’re not
 They`re not