Book,  Part, Title, Chapter, Can.

1    1,   0,    2,   0,   23|             force~of law unless it is reasonable; a custom which is expressly
2    1,   0,    2,   0,   23|              the law, however, is not~reasonable.~
3    1,   0,    4,   5,   89| ecclesiastical law without a just and reasonable~cause, after taking into
4    2,   2,    1,   2,  396|         absent from his diocese for a reasonable cause but not~beyond a month,
5    3,   0,    4,   0,  832|              1. Except for a just and reasonable cause, the Christian faithful
6    4,   1,    2,   1,  882|           during Mass; for a just and~reasonable cause, however, it can be
7    4,   1,    3,   1,  907|             906 Except for a just and reasonable cause, a priest is not to
8    4,   1,    5,   2, 1001|          their pastoral office. For a reasonable cause, any other priest
9    4,   1,    7,   6, 1123|           kind if there is a just and reasonable cause. He is not~to grant