#### SYSTEM-48

Proposed by Daniel Sitaru-Romania SYSTEM-48 Solution by Jalil Hajimir-Toronto-Canada

#### SYSTEM-47

Proposed by Daniel Sitaru-Romania SYSTEM-47 Solution by Tran Hong-Dong Thap-Vietnam

#### SYSTEM-46

Proposed by Daniel Sitaru-Romania SYSTEM-46 Solution by Bedri Hajrizi-Mitrovica-Kosovo

#### SYSTEM-45

Proposed by Daniel Sitaru-Romania SYSTEM-45 Solution by Petre Daniel Alexandru-Romania

#### SYSTEM-44

Proposed by Daniel Sitaru-Romania SYSTEM-44 Solution by Tran Hong-Dong Thap-Vietnam

#### SYSTEM-43

Proposed by Daniel Sitaru-Romania SYSTEM-43 Solution by Khaled Abd Imouti-Damascus-Syria

#### SYSTEM-42

Proposed by Daniel Sitaru-Romania SYSTEM-42 Solution by Tran Hong-Dong Thap-Vietnam

#### SYSTEM-41

Proposed by Daniel Sitaru-Romania SYSTEM-41 Solution by Tran Hong-Dong Thap-Vietnam