D31N			A31N			A20S
B	5		C	4		B	14
B	17		C	15		B	26
B	26		C	25		B	36
B	34		C	34		B	48
B	41		C	44		B	57
B	49		C	55		B	67
B	57		C	62		B	77
B	64		C	74		B	86
B	71		C	81
			C	92