Образуйте все вероятные формы инфинитива от следующих глаголов: достигать; развиваться; читать;

1. Достигать - to reach, to be reaching, to have reached, to have been reaching, to be reached, to have been reached.
2. Развиваться - to develop, to be developing, to have developed, to have been developing, to be developed, to have been developed.
3. Читать - to read, to be reading, to have read, to have been reading, to be read, to have been read.
4. Учить - to study, to be studying, to have studied, to have been studying, to be studied, to have been studied.
5. Вводить - to enter, to be entering, to have entered, to have been entering, to be entered, to have been entered.