czech tongue twister

Czech sentences:
CZ: "Prd krt skrz drn, zprv zhlt hrst zrn."
EN: "A mole farted through grass, first swallowing a handful of grain."
CZ: "Chrt pln skvrn vtrhl skrz trs chrp v čtvrť Krč."
EN: "A greyhound full of stains burst through a cluster of cornflowers in the neighborhood of Krč."

These are actually not tongue twister for native Czech speakers but I can imagine they can appear as such for foreigners. It is very unusual structure - definitely not used in day to day basis nevertheless grammatically legit.