Column A1:A7 contains "A" to "G"
Column C1:C7 contains "A" to "G"
Using the combin formula combin(14,2)=91

How to produce all the combinations in columns E row by row?

e.g. in E1=A,A
E2=A,B until E91=G,G

Can someone advise the formula.

Thank you for helping

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