@custom0            rd rs1 imm12 14..12=0 6..2=0x02 1..0=3
@custom0.rs1        rd rs1 imm12 14..12=2 6..2=0x02 1..0=3
@custom0.rs1.rs2    rd rs1 imm12 14..12=3 6..2=0x02 1..0=3
@custom0.rd         rd rs1 imm12 14..12=4 6..2=0x02 1..0=3
@custom0.rd.rs1     rd rs1 imm12 14..12=6 6..2=0x02 1..0=3
@custom0.rd.rs1.rs2 rd rs1 imm12 14..12=7 6..2=0x02 1..0=3

@custom1            rd rs1 imm12 14..12=0 6..2=0x0A 1..0=3
@custom1.rs1        rd rs1 imm12 14..12=2 6..2=0x0A 1..0=3
@custom1.rs1.rs2    rd rs1 imm12 14..12=3 6..2=0x0A 1..0=3
@custom1.rd         rd rs1 imm12 14..12=4 6..2=0x0A 1..0=3
@custom1.rd.rs1     rd rs1 imm12 14..12=6 6..2=0x0A 1..0=3
@custom1.rd.rs1.rs2 rd rs1 imm12 14..12=7 6..2=0x0A 1..0=3

@custom2            rd rs1 imm12 14..12=0 6..2=0x16 1..0=3
@custom2.rs1        rd rs1 imm12 14..12=2 6..2=0x16 1..0=3
@custom2.rs1.rs2    rd rs1 imm12 14..12=3 6..2=0x16 1..0=3
@custom2.rd         rd rs1 imm12 14..12=4 6..2=0x16 1..0=3
@custom2.rd.rs1     rd rs1 imm12 14..12=6 6..2=0x16 1..0=3
@custom2.rd.rs1.rs2 rd rs1 imm12 14..12=7 6..2=0x16 1..0=3

@custom3            rd rs1 imm12 14..12=0 6..2=0x1E 1..0=3
@custom3.rs1        rd rs1 imm12 14..12=2 6..2=0x1E 1..0=3
@custom3.rs1.rs2    rd rs1 imm12 14..12=3 6..2=0x1E 1..0=3
@custom3.rd         rd rs1 imm12 14..12=4 6..2=0x1E 1..0=3
@custom3.rd.rs1     rd rs1 imm12 14..12=6 6..2=0x1E 1..0=3
@custom3.rd.rs1.rs2 rd rs1 imm12 14..12=7 6..2=0x1E 1..0=3