I have 3 table EMPLOYEE,HOME,OFFICE
in Employee 2 fields available EMP ID,TAG ,Home has 2 filed Home ID,HTAG and office has 3 fields EMP ID,TAG,OFZname
EMPLOYEE
EmP ID  TAG
1       yellow
2      pink
3       green
Home
Home ID  HTaG
1        pink
2        pink
3        blue
Office
EMP ID TAG OFZname
1     blue mumbai
2     green  chennai
I want a query so that result is
pink 3
blue 2
green 2
by combining 2 table