GWWWHC3DRE263HTT6URWN2YNHYUZ4N4SOHZFJCJUKN7YML4DTKUQC
XJHUBLK673LN2VVQ5FIOENXMS5OFSFWXM5GSP2X7XEVOL74WV6OAC
current = current.forward[0].?;
current = current.forward[0] orelse return null;