col1,thead,th	col2,thead,th	col2,thead,th	col3,thead,th
col1,tbody,td	col2,tbody,td	col2,tbody,td	col3,tbody,td
col1,tbody,td	col2,tbody,td	col2,tbody,td	col3,tbody,td
col1,tfoot,td	col2,tfoot,td	col2,tfoot,td	col3,tfoot,td