There are as many ways as you have imagination...
Code:
	m=0
	If (a = B) then
		if (a = c) then
			if (a = d) then
				if (a = e) then
					if (a = f) then
						if (a = g) then
							if (a = h) then
								if (a = i) then
									if (a = j) then
										if (a = k) then
											if (a = l) then m=1
											endif
										endif
									endif
								endif
							endif
						endif
					endif
				endif
			endif
		endif
That one kinda looks pretty...