a = 00
b = 00
r = 00

a = 00
b = fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe
r = 00

a = 01
b = fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe
r = ffffffebffffffebfffffff3fffffffd0000000300000005000000040000000100000013000000270000001ffffffff9

a = 02
b = fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe
r = ffffffd7ffffffd7ffffffe7fffffffa000000060000000a0000000800000003000000270000004e0000003efffffff3

a = 03
b = fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe
r = ffffffc3ffffffc3ffffffdbfffffff7000000090000000f0000000c000000050000003b000000750000005dffffffed

a = 7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffff80000000000000007fffffff
b = 02
r = ffffffebffffffebfffffff3fffffffd0000000300000005000000040000000100000013000000270000001ffffffff9

a = 7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffff800000000000000080000000
b = 02
r = 14000000140000000c00000002fffffffcfffffffafffffffbfffffffdffffffebffffffd8ffffffe100000006

a = 800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
b = 02
r = 01