An object of the invention is to provide a granulation method and a granulation apparatus that can reduce the manufacturing costs of pellets. The vacuum cleaner hose is formed by spirally winding and sticking a band-shaped material having protrusions connected to each other in a line. Traversing a node of the trie data structure to process a character of the string applies any applicable correction rules to the character, wherein each correction rule has an associated cost, adjusted after each character processed. The opening can be covered by at least one base plate. If the above conditions are satisfied, a counter in the base record is incremented and the sequentially next record is deleted. The rod-shaped endoscope body is provided therein with a light emitter, an observing system, a transmitter for transmitting a radio wave which carries an image formed by the observing system, and a power supplying device.