D31N			A31N			A20S
B	4		C	5		B	5
B	13		C	12		B	12
B	22		C	19		B	22
B	30		C	26		B	30
B	38		C	42		B	39
B	46		C	49		B	49
B	54		C	57		B	57
B	62		C	66		B	65
B	70		C	76		B	73
			C	87
			C	96