Keyword Analysis & Research: why can i not merge cells in excel

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why can i not merge cells in excel	1.64	0.8	7112	1	34
why	0.73	0.2	476	89	3
can	0.41	0.7	1901	34	3
i	1.83	0.4	2019	42	1
not	0.12	0.1	8258	26	3
merge	1.76	0.3	2636	79	5
cells	0.66	0.2	495	81	5
in	1.43	0.4	93	8	2
excel	1.66	0.1	8166	70	5

Keyword	CPC	PCC	Volume	Score
why can i not merge cells in excel	1.03	0.7	3378	90