I guess it's rare, but here's a short level for demonstration. You can get 1st or 2nd star by random chance:
H4sIAAAAAAAAA42PUQuCMBSF/8t9nmMqFuyxQgh6iIpeoocxh6xskzkhkf33pllZFPS0y+75zjm3hVQWQrGLAApWVDYEBGujT4Jbv6iAHlpIC5b7KfIb7d8WrkCDBBMEDdAJTpw7IthybaTKfwMET5OeCGIceQZ91z1l4WC80rr87LFhmay7sSsxyoiHUgSTnp1rpfwl2twNdk0pev7ltGdF7f/ebcKxDfqfe8RHQ/yM8XNudK2yTiFVZZniYrnwnHM3w01+BHsBAAA=