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Keyword	CPC	PCC	Volume	Length string	Score
how did the first telegraph work	0.61	0.8	7883	32	62
first working magnetic telegraph	0.11	0.8	7038	32	59
how did the telegraph work	1.89	0.8	7024	26	38
how was the telegraph invented	1.06	0.7	3341	30	18
where was the first telegraph used	0.78	0.2	3534	34	41
how invented the telegraph	1.91	0.2	5483	26	32
how the telegraph worked	2	1	9006	24	21
explain how the telegraph worked	0.29	0.4	4879	32	95
how created the telegraph	1.12	0.4	881	25	62
who made the first telegraph	1.22	0.9	9892	28	42
why was the telegraph created	1.87	0.3	1592	29	41
the first electrical telegraph	1.77	0.1	6985	30	73
the first electric telegraph	1.38	0.2	8192	28	56
who invented the first electric telegraph	1.12	0.4	7341	41	2
who created the first electric telegraph	0.82	0.7	717	40	31
who invented the electrical telegraph	1.65	0.2	797	37	58
first for magnets uk	0.99	0.6	8791	20	93

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