Many industrial robots perform tasks that are ill-suited either to human hands and eyes or are so onerous or strenuous that people do not want to do then.
                    
                
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                Aare ill-suited either to human hands and eyes or are so onerous or strenuous
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                Bare either ill-suited to human hands and eyes or they are so onerous or strenuous so 
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                Ceither ill-suited to human hands and eyes or are so onerous or strenuous
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                Deither are ill-suited to human hands and eyes or so onerous or strenuous so
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                Eeither are ill-suited to human hands and eyes or are so onerous or strenuous
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