Keyword Analysis & Research: why would the post office return my mail

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why would the post office return my mail	1.93	0.1	185	91	40
why	0.3	0.8	4831	90	3
would	0.91	0.3	2796	33	5
the	1.23	0.1	9911	3	3
post	1.02	0.6	1085	48	4
office	1.07	0.3	9786	47	6
return	0.99	0.4	76	81	6
my	0.59	0.8	6076	70	2
mail	1.03	1	782	86	4

Keyword	CPC	PCC	Volume	Score
why would the post office return my mail	1.53	0.3	9825	93
post office keeps returning my mail	1.34	1	5679	13
usps return mail reasons	1.28	0.1	3144	84
why did my mail get returned	1.83	0.3	5641	88
post office returned mail	1.69	0.4	7198	89
post office return mail	1.91	0.8	603	35
usps reasons for returned mail	1.35	1	2307	56
why would mail be returned to sender	0.86	0.5	9802	27
why would usps return to sender	0.21	0.9	970	92
reasons for returned mail	1.17	1	7940	67
reasons for return to sender usps	0.09	0.1	4974	6
reasons for return to sender mail	1.63	0.7	2002	14
reasons mail is returned to sender	1.76	0.4	4906	75
post office very returns	1.98	0.8	5211	40