Queries :: How To Retrieve Column Data Other Than Specified In 2 Sql Queries

I have a table (tbl1) contains sample records in Basecode column like S2378797 , R1165778 , W1165778 , N1165778

Description EID Basecode
----------- ---- ---------
ssdad 1001 S2378797
gfd 1002 S1164478
gfdsffsdf 1003 R1165778
ssdad 1004 M0007867
gfd 1005 N7765111

[code]....

And retrieving all **Basecode** if column data length >6 and with numbers '96', '78','54','15' by this query

Code:
SELECT tbl1.EID,tbl1.Description,tabl1.Basecode FROM tbl1
WHERE (((Len([Basecode]))>6)AND ((Left([Basecode],2))='15')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='54')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='78')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='96'));

How do i get other data which won't retrieve based on above queries, other than data mentioned on these queries like this

Description EID Basecode
----------- ---- ---------
ssdad 1001 2378797
gfd 1002 1164478
ddd 1004 1040
d88jg 1004 14C676
fsa 6565 158
fdh 1004 2Khlm
ggdg 2009 967

Third query not working

Code:
SELECT tbl1.EID,tbl1.Description,tabl1.Basecode FROM tbl1
WHERE (IsNumeric(Left(Base,1)) AND Left(Base,1) Not In ("W","N"))
AND NOT (((Len([Basecode]))>6)AND ((Left([Basecode],2))='15')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='54')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='78')) OR
(((Len([Basecode]))>6) AND ((Left([Basecode],2))='96'));