{form form class => 'form'}
{label word1} {input word1 class => 'form-control'}
{label word2}
{input word2_condition class => 'form-control'} {input word2 class => 'form-control'}
{label word3}
{input word3_condition class => 'form-control'} {input word3 class => 'form-control'}

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{input submit class => 'btn btn-outline-dark'}
{/form}