Hi Frash, Have mine laid out in a checkerboard with small curved paving slabs between...this is detering the 'world domination' previously mentioned by both oregano or mint! Flat leaf and curly parsley, oregano, thyme, mint, sage, rosemary, french tarragon, fennel, lemon balm (keeps the bugs away), and chives. Basil is an annual, it pegs out in the winter. Either plant fennel or dill but not both in close proximity ~ they cross pollinate apparently.
Best of luck with your patch ~ mmmm I can smell all those lovely herbs already!