diff --git a/code/common.sh b/code/common.sh
new file mode 100644
index 0000000..b6271c5
--- /dev/null
+++ b/code/common.sh
@@ -0,0 +1,8 @@
+#jq_to_array(jq_expression)
+function _jq_to_array() {
+	declare -ga "_tmp=($(jq -r "$1" | sed 's/[][`~!@#$%^&*():;<>.,?\|{}=+-]/\\&/g;'"s@\\\'@\\'@g" ))"
+}
+
+function format_numbers() {
+	rev | sed "s#[[:digit:]]\{3\}#&,#g" | rev | sed -E 's/^,//'
+}