define helix1 901-907C, 965-971C
define helix2 948-952C, 960-964C
define helix3 925-930C, 938-943C
define helix4 910-913C, 921-924C
define helices helix1, helix2, helix3, helix4
echo tRNA helices are defined as helix1...helix4
define loop1 931-937C
define loop2 914-920C
define loop3 944-947C
define loop4 953-959C
define loop5 908-909C
define loops loop1, loop2, loop3, loop4, loop5 
echo tRNA loops are defined as loop1...loop5
define knot1 925C, 943C
define knots knot1
echo tRNA knots are defined as knot1
define anticodon 933-935C
echo tRNA anticodon is defined as anticodon
define lend1 972-975C
define lends lend1
echo tRNA lends is defined as lend1 
