040000 tree 92255ca991e27f697a99918280094c8538ae6293	1 trivial
040000 tree b8a87614e7b23d5b4e6742424e7aedf8cce7cc2a	2 signal
040000 tree d780031f2380471a540e430cf8d58a98d89e3247	3 ambiguous