active
U11
tt
N
mark
N
active
U21
tt
M
N
mark
s
plus
N
M
active
U31
tt
mark
0
active
U41
tt
M
N
mark
plus
x
N
M
N
active
and
tt
X
mark
X
active
isNat
0
mark
tt
active
isNat
plus
V1
V2
mark
and
isNat
V1
isNat
V2
active
isNat
s
V1
mark
isNat
V1
active
isNat
x
V1
V2
mark
and
isNat
V1
isNat
V2
active
plus
N
0
mark
U11
isNat
N
N
active
plus
N
s
M
mark
U21
and
isNat
M
isNat
N
M
N
active
x
N
0
mark
U31
isNat
N
active
x
N
s
M
mark
U41
and
isNat
M
isNat
N
M
N
active
U11
X1
X2
U11
active
X1
X2
active
U21
X1
X2
X3
U21
active
X1
X2
X3
active
s
X
s
active
X
active
plus
X1
X2
plus
active
X1
X2
active
plus
X1
X2
plus
X1
active
X2
active
U31
X
U31
active
X
active
U41
X1
X2
X3
U41
active
X1
X2
X3
active
x
X1
X2
x
active
X1
X2
active
x
X1
X2
x
X1
active
X2
active
and
X1
X2
and
active
X1
X2
U11
mark
X1
X2
mark
U11
X1
X2
U21
mark
X1
X2
X3
mark
U21
X1
X2
X3
s
mark
X
mark
s
X
plus
mark
X1
X2
mark
plus
X1
X2
plus
X1
mark
X2
mark
plus
X1
X2
U31
mark
X
mark
U31
X
U41
mark
X1
X2
X3
mark
U41
X1
X2
X3
x
mark
X1
X2
mark
x
X1
X2
x
X1
mark
X2
mark
x
X1
X2
and
mark
X1
X2
mark
and
X1
X2
proper
U11
X1
X2
U11
proper
X1
proper
X2
proper
tt
ok
tt
proper
U21
X1
X2
X3
U21
proper
X1
proper
X2
proper
X3
proper
s
X
s
proper
X
proper
plus
X1
X2
plus
proper
X1
proper
X2
proper
U31
X
U31
proper
X
proper
0
ok
0
proper
U41
X1
X2
X3
U41
proper
X1
proper
X2
proper
X3
proper
x
X1
X2
x
proper
X1
proper
X2
proper
and
X1
X2
and
proper
X1
proper
X2
proper
isNat
X
isNat
proper
X
U11
ok
X1
ok
X2
ok
U11
X1
X2
U21
ok
X1
ok
X2
ok
X3
ok
U21
X1
X2
X3
s
ok
X
ok
s
X
plus
ok
X1
ok
X2
ok
plus
X1
X2
U31
ok
X
ok
U31
X
U41
ok
X1
ok
X2
ok
X3
ok
U41
X1
X2
X3
x
ok
X1
ok
X2
ok
x
X1
X2
and
ok
X1
ok
X2
ok
and
X1
X2
isNat
ok
X
ok
isNat
X
top
mark
X
top
proper
X
top
ok
X
top
active
X
active
1
U11
2
tt
0
mark
1
U21
3
s
1
plus
2
U31
1
0
0
U41
3
x
2
and
2
isNat
1
proper
1
ok
1
top
1
FULL