diff --git a/src/RxOp.pm b/src/RxOp.pm
index 4b76435a..e005fa1c 100644
--- a/src/RxOp.pm
+++ b/src/RxOp.pm
@@ -195,6 +195,33 @@ use CgOp;
     no Moose;
 }
 
+{
+    package RxOp::SeqAlt;
+    use Moose;
+    extends 'RxOp';
+
+    # zyg * N
+
+    sub op {
+        my ($self, $cn, $cont) = @_;
+
+        my $cni = Niecza::Actions->gensym;
+        my @terms;
+        for (@{ $self->zyg }) {
+            push @terms, Op::CallSub->new(
+                invocant => $self->_close_k($_->op($cn, $cont)),
+                positionals => [ Op::Lexical->new(name => $cni) ]);
+        }
+
+        $cni, Op::StatementList->new(children => \@terms);
+    }
+
+    sub lad { $_->zyg->[0]->lad }
+
+    __PACKAGE__->meta->make_immutable;
+    no Moose;
+}
+
 {
     package RxOp::ConfineLang;
     use Moose;
diff --git a/test.pl b/test.pl
index 26d8b033..45035545 100644
--- a/test.pl
+++ b/test.pl
@@ -2,7 +2,7 @@
 
 use Test;
 
-plan 386;
+plan 392;
 
 ok 1, "one is true";
 ok 2, "two is also true";
@@ -905,3 +905,7 @@ ($rgx, $rgxname, @y, @n)
 rxtest /<[ y ]>/, '<[ y ]>', ("y"), (" ", "x", "z");
 rxtest /<[ i .. k ]>/, '<[ i .. k ]>', ("i", "j", "k"), ("h", "l");
 rxtest /<[ \W a..z ]>/, '<[\W a..z]>', ("a", "z", "+"), ("\x4E00");
+
+rxtest /a || b/, 'a || b', ("a", "b"), ("c", "");
+rxtest /x [a || aa]: c/, 'x[a||b]:c', ("xac",), ("xaac",);
+