Body html Liquid syntax error: Unknown tag 'elsif'

I know there have been posts about this, but none of them are any bit helpful. What the heck am I doing wrong? I tried even learning some HTML to fix this myself, but as you can imagine its not an overnight thing. Here’s my problem; I’m importing the Shipment Out for Delivery template, and I am getting this error. Its a “elsif” statement, and from what I've learned it seems to be caused by improper usage of the statement by the developer of this template. Below I will include the HTML code in which the error is embedded in.

<td align="left" class="kl-text" style="font-size:0px;padding:0px;padding-top:0px;padding-right:18px;padding-bottom:20px;padding-left:18px;word-break:break-word;">
<div style="font-family:'Helvetica Neue',Arial;font-size:14px;font-style:normal;font-weight:400;letter-spacing:0px;line-height:1.3;text-align:left;color:#000000;"><div style="text-align: center;"><span style="font-weight: bold;">Your full order is {% elsif fulfillment.item_count > 1 %}<span style="line-height: 1.6em;">{% if fulfillment_status == 'fulfilled' %}</span><span style="line-height: 1.6em;">The last items in your order are</span><span style="line-height: 1.6em;">{% else %}</span><span style="line-height: 1.6em;">Some items in your order are</span><span style="line-height: 1.6em;">{% endif %}</span><span style="line-height: 1.6em;">{% else %} </span><span style="line-height: 1.6em;">{% if fulfillment_status == 'fulfilled' %}</span><span style="line-height: 1.6em;">The last item in your order is</span><span style="line-height: 1.6em;">{% else %}</span><span style="line-height: 1.6em;">One item in your order is{% endif %}</span><span style="line-height: 1.6em;">{% endif %} now out for delivery.</span></span></div></div>

I do not have the brain power to try and tediously figure out what someone who knows way more than me did wrong. Please someone who does know a lot about this help me solve my issue. Thanks.