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(a). Proof of continuity of residence may be shown by the production of any evidence acceptable in the country of residence, such as proof of occupational activity or the production of rent receipts.
(b). (i) Residence shall be regarded as continuous notwithstanding periods of absence of less than three months, provided that the absence is not caused by repatriation of deportation.
(ii) Periods of absence of six months or more shall be held to interrupt the continuity of residence.
(iii) In order to determine whether a period of absence of between three and six months shall interrupt the continuity of residence, regard shall be had to the intention or otherwise of the person concerned to return to the country of residence and to the extent to which he has preserved his connection therewith during the period of his absence.
(iv) Service in ships registered in the country of residence shall not be held to interrupt the continuity of residence. Service in other ships shall be treated in accordance with the provisions of sub-paragraphs (i) to (iii) above.