tenses

1. future

1.1. simple

1.1.1. i will eat

1.2. continuous

1.2.1. i will be eating

1.3. perfect

1.3.1. i will have eaten

1.4. perfect continuous

1.4.1. i will have been eatting

2. present

2.1. simple

2.1.1. i eat

2.2. continuous

2.2.1. i am eating

2.3. perfect

2.3.1. i have eaten

2.4. perfect continuous

2.4.1. i have been eatting

3. past

3.1. simple

3.1.1. i ate

3.2. continuous

3.2.1. i was eatting

3.3. perfect

3.3.1. i had eaten

3.4. perfect continuous

3.4.1. i had been eatting