['WORD','select'],
['WORD','case'],
['WORD','when'],
['WORD','a'],
'=',
['WORD','b'],
['WORD','then'],
'\'',
['WORD','c'],
'\'',
['WORD','else'],
'\'',
['WORD','d'],
'\'',
['WORD','end'],
'"',
['WORD','tough_one'],
'"',
['COMMA',','],
['WORD','e'],
['WORD','as'],
'"',
['WORD','even'],
['WORD','tougher'],
'"',
['WORD','from'],
['WORD','mytable']