20-6-1 Want of performance or delay excused. 20-6-2 Uncontrollable cause excusing want or delay of performance. 20-6-3 Want or delay of performance excused by creditor's act inducing nonperformance. 20-6-4 Want or delay of performance excused by creditor's act or operation of law preventing performance. 20-6-5 Debtor entitled to benefits when performance prevented by creditor. 20-6-6 Debtor entitled to portion of benefits when performance prevented other than by creditor. 20-6-7 Refusal of performance before offer equivalent to offer and refusal.