ftp 500 command not understood

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
ftp 500 command not understood	1.83	0.7	5374	24	30
ftp	0.97	0.5	6030	53	3
500	1.05	0.2	7833	65	3
command	0.04	0.3	3879	49	7
not	0.69	0.8	1093	52	3
understood	0.87	0.6	1435	17	10

Keyword	CPC	PCC	Volume	Score
ftp 500 command not understood	0.44	0.7	128	71
ftp 500 unknown command	0.03	0.5	630	81
command not understood ftp	1.88	0.5	485	53
ftp 500 wrong command	1.02	0.7	2343	93
linux ftp 500 unknown command	0.27	0.4	1133	57
ftp 500 unknown site command	0.79	0.2	784	93
python ftp 500 unknown command	0.2	0.4	8107	92
ftp 500 syntax error	1.48	0.2	1670	9
500 syntax error command unrecognized ftp	1.89	0.2	3092	47
500 command not understood	1.06	0.3	4507	3
ftp 550 command not implemented	0.21	0.5	4022	14
500 site command not understood	0.73	0.9	9184	81
ftp 500 invalid port command	0.65	0.6	4006	9
ftp 500 illegal port command	1.82	0.3	7990	38
ftp command not implemented	1.42	0.7	7461	28
got a 500 ftp-server	1.13	0.6	998	25
ftp 502 command not implemented	1.07	0.2	1774	30
ftp clients common command	0.33	0.1	7526	63
ftp put command example	0.34	1	8120	23
ftp 503 bad sequence of commands	0.09	0.5	1937	45
ftp 501 server cannot accept argument	1.66	0.6	3433	75