trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer[
trailer<<{a){a){a)){a)6){a)>>