Also, sometimes poets will use "poetic license" to make things fit a certain pattern.
Words might be out of place, or syllables missing from words. Archaic words might be used.
Here's a poem I wrote in 2008. I split sentences across lines without a natural break at times to keep the rhyming pattern going. I eliminated some syllables. I also used "There's" when grammatically it should be "There are".
The Football Team
There’s two sides to ev’ry story they say.
That’s true. I can visualize this day
The two sides of my life. I may lay
In my bed thinking of the great way
I have lived and how it’s been A-OK.
My friends deserted me, but that’s alright.
I’ve made new ones that stay in sight.
When the going got tough, they quickly took flight.
I have a grand time reflecting at night.
During the day, I lift things with all my might.
Choices I made call for my new friend Jack.
He’s trying real hard to separate me from crack.
I listen real hard as his mouth goes yackety yack.
It’s hard to believe how fast my life got off-track.
Oh wait, it’s all because I wanted to turn time back.
Reality, you see, is really quite diff’rent.
New struggles, no, there aren’t. Bent
Down in pain, I scream, just to vent.
I grasp the wall to move around the apartment.
This method is how I always went.
I never chose to live this way, but someone
Else wanted me this way. I just can’t run,
Or catch the ball. My role on the team isn’t none.
It’s to think how we can get the game won.
To this end, my job will never be done.
There’s different parts on the football team,
And to play the runner, for me it’d seem
I’d have to go back, but from what I seen
That’s a place I wouldn’t want to be.
I’ll play the part I’ve been given on God’s football team.