:3

13-0-------13-013-0----------------------------------13-013-013-0
13-0-----13-0------13-0---------------------------- 13-0---------13-0
13-0------------------13-0----------------------------13-0------------13-0
13-0-----------13-0-13-0------13-013-0------13-0-------------13-0
13-0-------------------13-0------13-013-0------13-0-------------13-0
13-0-------------------13-0---------------------------13-0-----------13-0
13-0-----13-0-------13-0----------------------------13-0---------13-0
13-0---------13-013-0--------------------------------13-013-013-0