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解排列組合題的“十六字方針，十二個(gè)技巧”：

(1)“十六字方針”是解排列組合題的基本規(guī)律，即_________、_________、_________、_________．

(2)“十二個(gè)技巧”是速解排列組合題的捷徑，即①相鄰問(wèn)題_________：②不相鄰問(wèn)題_________：③多排問(wèn)題_________：④定序問(wèn)題_________：⑤定位問(wèn)題_________：⑥有序分配問(wèn)題_________：⑦多元問(wèn)題_________：⑧交叉問(wèn)題_________：⑨至少(或至多)問(wèn)題_________：⑩選排問(wèn)題_________：?_________：?復(fù)雜問(wèn)題轉(zhuǎn)化法．