j    k l         foobar   >jkl foobar<
foobar                    >foobar<
jkl foobar                >jkl foobar<
1 2 3                     >1 2 3<
jk l foobar               >jk l foobar<
foobar j k l              >foobar j k l<
foobar j kl               >foobar j kl<
                          > <
                          > <
j jk foobar               >j jk foobar<
j k jk foobar             >jk jk foobar<
j k l                     >jkl<