SOURCE

<div class="container">
	<div class="left-column">
		<span class="item">item</span>
        <span class="item">item22222</span>
        <span class="item">item</span>
    </div>
    <div class="right-column">
        <span class="item">item</span>
        <span class="item">item22222</span>
        <span class="item">item</span>
    </div>
</div>

.container {
  display: flex;
  flex-wrap: wrap;
  width: 200px;
  justify-content: space-between;
  border: 1px solid black;
}

/* .container {
  display: flex;
  justify-content: space-between;
} */

.left-column,
.right-column {
  display: flex;
  flex-direction: column;
  border: 1px solid black;
}

.item {
  margin-bottom: 10px;
}

.left-column .item {
  justify-content: flex-start;
}
.right-column {
   /* text-align: right; */
   /* justify-content: flex-end; */
}

.right-column .item {
    display: block;
  justify-content: flex-end;
  border: 1px solid black;
}