In counterfactual conditionals the fulfilment of the condition is impossible, contrary to fact or at least unlikely to happen. The fulfilment has already happened or has occurred in the past and it is now irreversible. The signer predicts in spite of knowledge to the contrary. The following is an example of a counterfactual conditional in DGS.
re, hn, sq
if weather yesterday good ix1 outside walk.
‘If the weather was good yesterday, I would have taken a walk outside.’