The non-manual markers used to mark antecedent clauses in counterfactual conditional clauses are raised eyebrows on the predicate, repetitive head nod and head thrust at the end of the antecedent clause.
be
‘If I were...’
How these non-manual markers align and spread are shown in the following example:
_ _re
__ hn
h-th
[ıx2 come ıx1 know ıx1] aırport ıx2 meet1-2
‘If I had known that you were coming I would have picked you up from the airport.’
Repetitive head nod distinguishes counterfactual conditional clauses from factual ones. Moreover, there are no shared non-manual markers in the consequent clauses across different types of conditional clauses. So, the consequent clause is neutral in terms of the non-manual markers.