U41
tt
N
U52
tt
s
plus
N
M
U72
tt
plus
x
N
M
N
U11
tt
U12
isNat
U12
tt
tt
U21
tt
tt
U31
tt
U32
isNat
U32
tt
tt
U51
tt
U52
isNat
U61
tt
0
U71
tt
U72
isNat
isNat
tt
isNat
U11
isNat
isNat
U21
isNat
isNat
U31
isNat
plus
N
0
U41
isNat
plus
N
s
M
U51
isNat
x
N
0
U61
isNat
x
N
s
M
U71
isNat
2.2
NaTT
certifiable-1.6