下面是日本A公司向国内B公司电洽购买玩具，两家公司进行的交易磋商过程。请指出，每一次函电表示的法律含义(询盘、发盘、还盘、接受)。 (1)Dec．8 Incoming：WHITE SNOW BRAND TOY TYA22 BEAR TYA221 DOG TYA322 DUCK PLEASE CABLE REPLY PRESENT PRICE AND AVAILABLE QUANTITY FOR JAN SHIPMENT． (2)Dec．10 Outgoing：YOURS 8TH REFERENCE PRICE CIF OSAKA TYA22 BEAR USD 0．45 TYA221 DOG 0．60 TYA322 DUCK 0．50 IN CARTONS OF 500 PCS EACH． (3)Dec．11 Incoming：YOURS 10TH INTERESTED 3000 PCS EACH JAN SHIPMENT PLEASE OFFER FIRM． (4)Dec．15 Outgoing：YOURS 11 TH OFFER SUBJECT TO REPLY HERE BY 22TH DEC．2000 PCS TYA22 USD 0．45 2000 PCS TYA22l 0．60 3000 PCS TYA322 0．50 FEB SHIPMENT LC SIGHT． (5)Dec．17 Incoming：YOURS 15TH USD 0．36 0．48 0．40 3000 PCS EACH JAN／FEB LC 30 DAYS SIGHT REPLY IMMEDIATELY． (6)Dec．19 Outgoing：YOURS 17TH 3000 PCS EACH TYA22 0．40 TYA221 0．53 TYA322 0．44 JAN／FEB SHIPMENT INSIJR ANCE AMOIJNT 110 PERCENT IN VOICE VAL．UE AGAINST ALL RISKS WAR RISKS OTHERS SAME AS OURS 15TH．THE OFFER IS OPEN FOR ONE WEEK． (7)Dec．22 Incoming：ACCEPT PLEASE SENT SALES CONFIRMATION IN DUPLI-CATE．