Number	Duplicat	Name	Member
1	-	chinkychinks	chinkychinks,priatel2010, stevensh0,schmoebi,jvill7356, mikmikarutnevvv,V_F_Vendetta, dominic0034,heidinok, corrykingmakerxxx,TheFatalScorpion, kasseemoo,Duuckky, carloarbore,valeriastoica50, priatelbbd1,zamura,intuitivegenius, manisha75,MrPrezident94,J-McNasty, Beez88,ahope,Lenkoran, dyoung1,Whitemanwin,chaswg, iskaashi114,TexasHustle95,pro888kar
2	-	priatel2010
3	-	stevensh0
4	-	schmoebi
5	-	jvill7356
6	-	mikmikarutnevvv
7	-	V_F_Vendetta
8	-	dominic0034
9	-	heidinok
10	-	corrykingmakerxxx
11	-	TheFatalScorpion
12	-	kasseemoo
13	-	Duuckky
14	-	carloarbore
15	-	valeriastoica50
16	-	priatelbbd1
17	-	zamura
18	-	intuitivegenius
19	-	manisha75
20	-	MrPrezident94
21	-	J-McNasty
22	-	Beez88
23	-	ahope
24	-	Lenkoran
25	-	dyoung1
26	-	Whitemanwin
27	-	chaswg
28	-	iskaashi114
29	-	TexasHustle95
30	-	pro888kar

Information :

I use Microsoft Excel to make recapitulation above.
Column "Duplicate",
useful to know whether member ever invited or never,
so we did not invite members repeatedly.
If members in column "Name" there are same, then in column "Duplicate" will be written "double", whereas if there is none, it will be written "-".
Column "Duplicat" using the formula
=IF(MAX(COUNTIF(C:C,C:C))>1,"double","-")
Column "Member",
useful for combining 30 members who had gathered in column "Name",
so in column "Member" has been merged already 30 members and commas separating their names.
Column "Members" using the formula
=C2&","&C3&","&C4&","&C5&","&C6&","&C7&","&C8&","&C9&","&
C10&","&C11&","&C12&","&C13&","&C14&","&C15&","&C16&","&
C17&","&C18&","&C19&","&C20&","&C21&","&C22&","&C23&","&
C24&","&C25&","&C26&","&C27&","&C28&","&C29&","&C30&","&C31
Hope it helps, Sorry, and Thanks for All

GIC Admins