housetop than with ~ 20_PRO_21_09 ~ housetop than with ~ 20_PRO_25_24 ~
 housetop than with a ~ 20_PRO_21_09 ~ housetop than with a ~ 20_PRO_25_24 ~
 the housetop than with ~ 20_PRO_21_09 ~ the housetop than with ~ 20_PRO_25_24 ~