The initial idioms of the letter P

practical	Practice makes perfect
practice on	practice what preach
practice what you preach	practice
practise what preach	prairie dog
praise	praise the Lord, and pass the ammunition
throw (one's) toys out of the pram	prance around
prank	pratfall
prat	pratt
prattle about	prawn
pray	pray for
pray over	pray tell
pray to	pray to the enamel god
pray to the porcelain god	prayer, not a
prayerbones	prayer
preach	preach about