Table 4.

Fuzzy rules.

Category			IF		THEN
	No	SD	BA	SA	Safe/Unsafe
One	1	Present	Low	Present	Unsafe
	2	Present	Medium	Present	Unsafe
	3	Present	High	Present	Unsafe
	4	Present	Low	–	Unsafe
	5	Present	Medium	–	Unsafe
	6	Present	High	–	Unsafe
	7	Not Present	Low	Present	Unsafe
	8	Not Present	Medium	Present	Unsafe
	9	Not Present	High	Present	Unsafe
	10	Not Present	Low	–	Safe
	11	Not Present	Medium	–	Safe
	12	Not Present	High	–	Unsafe
Two	1	Present	Low	Present	Unsafe
	2	Present	Medium	Present	Unsafe
	3	Present	High	Present	Unsafe
	4	Present	Low	–	Unsafe
	5	Present	Medium	–	Unsafe
	6	Present	High	–	Unsafe
	7	–	Low	Present	Unsafe
	8	–	Medium	Present	Unsafe
	9	–	High	Present	Unsafe
	10	–	Low	–	Safe
	11	–	Medium	–	Safe
	12	–	High	–	Unsafe
Three	1	Low	Low	Low	Safe
	2	Low	Low	Medium	Safe
	3	Low	Low	High	Unsafe
	4	Low	Medium	Low	Safe
	5	Low	Medium	Medium	Safe
	6	Low	Medium	High	Unsafe
	7	Low	High	Low	Unsafe
	8	Low	High	Medium	Unsafe
	9	Low	High	High	Unsafe
	10	Medium	Low	Low	Safe
	11	Medium	Medium	Low	Safe
	12	Medium	High	Low	Unsafe
	13	Medium	Medium	Medium	Safe
	14	Medium	Medium	High	Unsafe
	15	Medium	Low	Medium	Safe
	16	Medium	Low	High	Unsafe
	17	Medium	High	Medium	Unsafe
	18	Medium	High	High	Unsafe
	19	High	Low	Low	Unsafe
	20	High	Medium	Low	Unsafe
	21	High	High	Medium	Unsafe
	22	High	High	High	Unsafe
	23	High	High	Low	Unsafe
	24	High	Medium	Medium	Unsafe
	25	High	Medium	High	Unsafe
	26	High	Low	High	Unsafe
	27	High	Low	Medium	Unsafe
Four	1	Low	Low	Low	Safe
	2	Low	Low	Medium	Safe
	3	Low	Low	High	Unsafe
	4	Low	Medium	Low	Safe
	5	Low	Medium	Medium	Safe
	6	Low	Medium	High	Unsafe
	7	Low	High	Low	Unsafe
	8	Low	High	Medium	Unsafe
	9	Low	High	High	Unsafe
	10	Medium	Low	Low	Safe
	11	Medium	Medium	Low	Safe
	12	Medium	High	Low	Unsafe
	13	Medium	Medium	Medium	Safe
	14	Medium	Medium	High	Unsafe
	15	Medium	Low	Medium	Safe
	16	Medium	Low	High	Unsafe
	17	Medium	High	Medium	Unsafe
	18	Medium	High	High	Unsafe
	19	High	Low	Low	Unsafe
	20	High	Medium	Low	Unsafe
	21	High	High	Medium	Unsafe
	22	High	High	High	Unsafe
	23	High	High	Low	Unsafe
	24	High	Medium	Medium	Unsafe
	25	High	Medium	High	Unsafe
	26	High	Low	High	Unsafe
	27	High	Low	Medium	Unsafe
Five	1	Low	Present	Present	Unsafe
	2	Medium	Present	Present	Unsafe
	3	High	Present	Present	Unsafe
	4	Low	Present	–	Unsafe
	5	Medium	Present	–	Unsafe
	6	High	Present	–	Unsafe
	7	Low	–	Present	Unsafe
	8	Medium	–	Present	Unsafe
	9	High	–	Present	Unsafe
	10	Low	–	–	Safe
	11	Medium	–	–	Safe
	12	High	–	–	Unsafe