Touch touch 4) is not mandatory, a touch that chime together within the same paragraph, it might be a touch or touch any letter. Experience in it gives a more natural composition.
4) Touch the touch is not applicable. The words that rhyme with each other within the same paragraph. It could be any rhyme or assonance Touch it gives up a musical opus.
4) in a touch not mandatory. Have little rhyme that rhyme each other within the same paragraph May be a hug or alliteration. Experience will help the more melody.