040000 tree b8b8cea483cec2a54b751e4cec237a2807474350	if
040000 tree 1d1ca1099307289583229f676a501369fed9eb6f	isNone
040000 tree 94f14f42eedd403800c13637bab0a86eba111bd3	isNotNone
040000 tree 6a1ff3907f0c74d9958cab03e3c510f9a4a3ac5c	len
040000 tree 772fedd5f4b8786f1f38bbde8aa1cdfde75540c2	main
040000 tree e1c20ffd4f33e254838c2e9d48fd291c10769330	not
040000 tree bb33fd4aeb92c1722828ec7f19e5c57d9788d4f6	par
040000 tree f706dec6058ed1ea7442aea6cfab827134dde547	print
040000 tree 01e32d330ec1739327cf330a145d0416ed1dc8f6	return
040000 tree d4e0834c7b3f6b87977e2f00c7cb2b0808f64b54	while