principal@@1	principal	main	22
principal@@1	principal	primary	21
principal@@1	principal	chief	11
principal@@1	principal	--not used as a noun--	8
principal@@1	principal	capital	2
principal@@1	principal	important	2
principal@@1	principal	key	2
principal@@1	principal	principle?	2
principal@@2	principal	director	5
principal@@2	principal	head	5
principal@@2	principal	headmaster	4
principal@@2	principal	head teacher	3
principal@@2	principal	superintendent	2