21.   A few years ago, however, he became so alarmed at the intensifying drug war and guerrilla wars in Colombia that he changed his philosophy.

22.   Prodprasop said he will support the controversial Community Forest Bill only if its philosophy is changed.

23.   The Akali Dal, which had boycotted the earlier election five years ago in response to a call by Sikh separatist groups, changed its philosophy this time.

24.   The MPLA has not changed its philosophy.