order, ordering, beginning...

while (one is at it), when, on the occasion of...

while (one is at it), when, on the occasion of...

order, discipline, regularity...

opportunity, occasion, chance...

order, sequence, procedure

opening (in a game of go, chess, etc.)...

rank, ranking order, hierarchy

overture, prelude

preface, foreword, introduction

disorder, chaos, confusion

curtain-raiser, prologue

introduction

preface, foreword, introduction...

public order, public policy

seniority by length of service

the beginning (as in "this is only the beginning"), lowest division in sumo

the beginning (as in "this is only the beginning"), lowest division in sumo

public order and morals, social standards, public policy

jonidan (second lowest) division

introduction, preface

order, sequence

foreword, preface, introduction

introduction

foreword, preface, introduction...

ordinal number

arranging seats by seniority

mechanism

order, system

authors preface