Time series for usage ranks for sample 2-grams:

Example time series for COVID-19 related 2-grams /></div></div> </div> </div></div><div id='stacks_out_499532_page10' class='stacks_out'><div id='stacks_in_499532_page10' class='stacks_in '><div id='stacks_out_p499532_n61217_page10' class='stacks_out'><div id='stacks_in_p499532_n61217_page10' class='stacks_in com_joeworkman_stacks_foundation_1col_s3_stack'> <div class='row ' > <div class='columns small-12 '> <div id='stacks_out_p499532_n61219_page10' class='stacks_out'><div id='stacks_in_p499532_n61219_page10' class='stacks_in com_joeworkman_stacks_foundation_divider_s3_stack'><hr class=