I replied earlier but since I made the dreadful mistake of saying hello in Japanese someone deleted the whole message.
Anyway, I had a couple of examples for you:
'Help' can be used with or without 'to' e.g. 'she helped me cook the dinner'
The same is true of 'let' e.g. 'he let me drive his car'.
Hope this helps.
We can also use bare infinitives when we list them ( just the first verb is a to-infinitive) e.g. Tomorrow I'd like to get up early, have a shower and do the shopping.
And "When two infinitive structures are joined by and, or, except, but, than, as or like, then the second is often without to: I'd like to lie down and go to sleep.
Do you want to have lunch now or wait till later. ..." Source: Swan's Practical English Grammar.
Except for the famous Hamlet's line:
"... To die, to sleep;
To sleep: perchance to dream ..."