I'd appreciate your help with creating this table.

I have the following data in the following cells (for example - the
real table is much longer):
A1 USD
A2 EUR
A3 GBP
A4 JPY
A5 CHF

I'd like to create a list of all possible combination of 2 cells
combined, e.g., USDEUR, USDGBP, USDJPY, USDCHF, EURGBP, EURJPY,
EURCHF, GBPJPY, GBPCHF and JPYCHF. The new created table should avoid
repetition of a combination that was already created (USDEUR and
EURUSD for example). And the new table should be in a single column if
possible.

Thanks.