Six letter words that start with I and end with P are icecap and instep.
A six letter word that starts with N and includes an I and a P is NIPPLE.
Some words that star with P and end with P are:palppapparsnippartnershippawnshoppeeppenmanshippeppickuppimppinuppipplopplumppolyppomppooppopprepprimpproppulppumppup
Some words that start and end with P are:parsnippeeppimpplopplumppolyppoopprimpproppulp
Some six letter words with p as the second letter are opener, operas, sparse, and apiece.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern P---PE. That is, six letter words with 1st letter P and 5th letter P and 6th letter E. In alphabetical order, they are: polype poulpe pyrope
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -P--EP. That is, six letter words with 2nd letter P and 5th letter E and 6th letter P. In alphabetical order, they are: upkeep upstep
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern P--NAP. That is, six letter words with 1st letter P and 4th letter N and 5th letter A and 6th letter P. In alphabetical order, they are: petnap
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern P-EN-P. That is, six letter words with 1st letter P and 3rd letter E and 4th letter N and 6th letter P. In alphabetical order, they are: prenup
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -P-NC-. That is, six letter words with 2nd letter P and 4th letter N and 5th letter C. In alphabetical order, they are: spence
pilot
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -P-TEP. That is, six letter words with 2nd letter P and 4th letter T and 5th letter E and 6th letter P. In alphabetical order, they are: upstep