Re: 呀咋 － cheating?

「架」- as a particle 
「噉唔得架 !」(can't be like that!) 「架 !」 empathize the firmness of the statement
「係唔係架 ?」( it that true?) 「架 ?」 strengthen the doubtful tone of the phrase

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「咋」- as a particle 
「每個月三千蚊人工」( $300HKD salary pre month )
「每個月三千蚊人工(咋！)」( (only) get $300HKD salary pre month!)
「咋 !」empathize the insufficient  nature of mentioned fact

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「架咋 ! 」as a compound particle - empathize the firmness of the statement and insufficient nature of mentioned fact

「每個月三千蚊人工」( $300HKD  salary pre month )
「每個月三千蚊人工(架咋！)」( $300HKD salary pre month, (that's all !))

「架咋? 」 empathize the firmness of the statement, insufficient nature of mentioned fact and strengthen the doubtful tone of the phrase.