Keyword Analysis & Research: what does b refer to

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does b refer to	0.49	0.1	541	53	20
what	0.14	0.4	3159	39	4
does	1.85	0.8	193	95	4
b	0.14	0.6	3843	51	1
refer	0.78	0.4	5823	42	5
to	0.99	0.3	397	96	2

Keyword	CPC	PCC	Volume	Score
what does b refer to	0.05	0.6	1776	24