present
|
past
|
future
|
conditional
|
|
---|---|---|---|---|
s1 |
cost
|
cost
|
will cost
|
would cost
|
s2 |
cost
|
cost
|
will cost
|
would cost
|
s3 |
costs
|
cost
|
will cost
|
would cost
|
p1 |
cost
|
cost
|
will cost
|
would cost
|
p2 |
cost
|
cost
|
will cost
|
would cost
|
p3 |
cost
|
cost
|
will cost
|
would cost
|
present
|
past
|
future
|
conditional
|
|
---|---|---|---|---|
s1 |
am costing
|
was costing
|
will be costing
|
would be costing
|
s2 |
are costing
|
were costing
|
will be costing
|
would be costing
|
s3 |
is costing
|
was costing
|
will be costing
|
would be costing
|
p1 |
are costing
|
were costing
|
will be costing
|
would be costing
|
p2 |
are costing
|
were costing
|
will be costing
|
would be costing
|
p3 |
are costing
|
were costing
|
will be costing
|
would be costing
|
present
|
past
|
future
|
conditional
|
|
---|---|---|---|---|
s1 |
have cost
|
had cost
|
will have cost
|
would have cost
|
s2 |
have cost
|
had cost
|
will have cost
|
would have cost
|
s3 |
has cost
|
had cost
|
will have cost
|
would have cost
|
p1 |
have cost
|
had cost
|
will have cost
|
would have cost
|
p2 |
have cost
|
had cost
|
will have cost
|
would have cost
|
p3 |
have cost
|
had cost
|
will have cost
|
would have cost
|
affirmative
|
negative
|
|
---|---|---|
s1 |
-
|
-
|
s2 |
cost
|
don't cost
|
s3 |
cost
|
don't cost
|
p1 |
cost
|
don't cost
|
p2 |
cost
|
don't cost
|
p3 |
cost
|
don't cost
|